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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 425 Documents
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USAHA PENINGKATAN KUALITAS AIR DENGAN VARIASI PENAMBAHAN TAWAS-LEMPUNG KERING “AMPO” PADA LIMBAH DOMESTIK YANG MENGANDUNG DETERJEN Nilna Amal
INFO-TEKNIK Vol 12, No 2 (2011): INFOTEKNIK VOL. 12 NO. 2 2011
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v12i2.1805

Abstract

Detergent is one type of pollutants that found in domestic wastewater disposal, especially produced from laundry activities. Accumulated detergent physically effected to water body causes foaming and high turbidity therefore causes bad smell. Nowadays, there are no many well known research easily and effectively to remove detergent content. This research proposes an easy and moderate process to remove detergent content from domestic effluent with cheap and available materials. It can useful as references to design some unit operation of wastewater treatment for domestic effluent with detergent contents. For this aim, it has chosen a treatment system coagulation flocculation which give alum coagulant and dry clay coagulant aid called “ampo”, thereafter rapid mixing is conducted along 5 minutes, this process continue with sedimentation. This research is conducted in laboratories scale use simulation water thereafter, tried to the real wastewater effluent. Detergent content variable vary from 20 mg/l, 60 mg/l and 100 mg/l then optimum alum dosage is determined. It is used to determine the optimum dosage alum-dry clay “ampo” combination with various detention time variables. Research finding shows linear correlation between initial detergent content with less of it. It means that if the more detergent content used the lower efficiency occur. The detention time also influence in process decreasing of detergent content, 48 hours is the best condition. Optimum condition found at optimum dosage alum 125 mg/l and ampo 25 g/l and the 48 hours detention time which reach 41%.in efficiency.
MODEL PENDEKATAN ALAT UJI KEPADATAN RINGAN UNTUK TANAH DI LABORATORIUM Anwar Muda
INFO-TEKNIK Vol 17, No 1 (2016): INFOTEKNIK Vol. 17 No. 1 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v17i1.1263

Abstract

The study is motivated, that during compaction test light to ground in the laboratory with standard equipment ISO 1742: 2008. However, this equipment has not been done as a benchmark or model approaches that have the same standards with ISO 1742: 2008 with a margin of error of ≤ 5%. This study aims to determine whether the test equipment density of light to the ground in a laboratory with a model can be used as a means of testing the density of light to the ground in a laboratory with the same standards as ISO 1742: 2008 with a margin of error of ≤ 5% and give the same assessment of the performance heap.The research method with a step that is preparing the soil samples are clay Palangkaraya and 2 pieces of light density test equipment is ISO 1742: 2008 and the model. Then, the next step is to test the density of the two pieces of the tool.The results showed the maximum dry weight of 1,51 g / cm3 and the optimum water content and soil 25,74% including silt-loam with poor performance forecasts pile up good or clay with a pile of bad performance forecast to moderate. While the maximum density of clay based Model for 5, 10, and 15 collisions per layer and for 20 and 25 collisions per layer as much as 2 layers, obtained by bulk density maximum dry and optimum moisture content with a margin of error of <5% of the ISO 1742: 2008, but do not have the same ratings with ISO 1742: 2008 on the performance of the pile, so that the model has not been qualified as light density test equipment to the ground in a laboratory. For 30 collisions per layer as much as 2 layers, has a bulk density maximum dry and optimum moisture content with a margin of error of <5% of the ISO 1742: 2008 and similar assessments to ISO 1742: 2008 on the performance of the pile, then the model qualifies as test equipment light density to the ground in a laboratory and have the same standards SNI1742: 2008.
PENGARUH FRAKSI VOLUME PENGUAT 2, 2,5 DAN 3% SERAT BAMBU HAUR DAN FIBERGLASS TERHADAP KEKUATAN TARIK MATRIKS POLIESTER Raliannoor Raliannoor; Dwi Rahmalina
INFO-TEKNIK Vol 20, No 2 (2019): INFOTEKNIK VOL. 20 NO. 1 DESEMBER 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i2.7710

Abstract

Against the backdrop of the increasing need for quality composite materials and the development of increasingly advanced composite manufacturing technology in the machinery industry. The aim of this research is to develop composite materials with bamboo fiber reinforcement and glass fiber as an alternative to automotive raw materials to replace plastic. Preparation of composite specimens with each reinforcement with volume fractions of 2%, 2.5%, and 3% and specimens without reinforcement or 0% volume fraction as a comparison. The polymer material used is Yukalac 157-EX BQTN polyester as its matrix. With haur bamboo fiber and fiberglass as a reinforcement. Making specimens using the hand lay up method. Tests carried out are composite specimen tensile tests. Tensile testing was carried out using the ASTM D 638M-84 M-1 standard. Based on the test results, it was concluded that the effect of fiber volume fraction on the characteristics of composite samples for tensile tests. Composite strengthened by haur bamboo and fiberglass powder at 3% heavy volume fraction has the most ideal characteristics that have a tensile strength of 53.581 MPa, modulus of elasticity of 87.452 MPa and polymer composite material with a strength of haur bamboo and fiberglass powder with a length of 5 mm at 3% reinforcing volume fraction can be used as an alternative to automotive raw materials, namely replacing polyoxymethylene plastic materials for the front bumper.
ANALISA PENGUKURAN LINIER SEBAGAI UPAYA PENGENDALIAN KUALITAS PRODUK DENGAN MENGGUNAKAN METODE CONTROL CHART Etik Puspitasari
INFO-TEKNIK Vol 16, No 2 (2015): INFOTEKNIK VOL. 16 NO. 2 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i2.199

Abstract

Quality control should be applied to various fields of both products and services. Quality aims to satisfy and meet customer expectations. One effort in known quality control using control charts, where using these methods we can find products that pass through the specified tolerance limits or defective products.This research was conducted by applying the linear measurement on cylindrical products with a diameter of 20 ± 0.05 mm in turning the results of using calipers with accuracy of 0.05 mm is used to measure the products that have been produced. In this study generated the number of defective products resulting from the process of turning the linear measurement of as much as 6 products that are outside the control limits, which consists of the data no 4, 6, 8, 11, 14 and 22. The factors that cause disability analyzed using fishbone diagrams, and are divided into 4 factors that are of human origin, method, machine and material.Improvement efforts to prevent defective production of turning is necessary to implement training for lathe operators, necessary alignment of straightness of machine or engine. And mechanical drive necessary improvements such as bearings, gears, sliders and then setting up a chisel, setting the workpiece, cutting speed correctly and chisel cutting, selection cutting speed must match the workpiece to be cut and the selection of feeding should be in accordance with the roughness desired , Keywords: Quality control, control charts, linear measurement, fishbone.
PENGARUH KECEPATAN PUTARAN TERHADAP KINERJA TERMAL ROTATING CLOSED THERMOSYPHON Arif Rochman Fachrudin
INFO-TEKNIK Vol 18, No 1 (2017): INFOTEKNIK Vol. 18 No. 1 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i1.3873

Abstract

Closed thermosyphon is a cooling device that allows the transfer of a certain amount of heat through a small surface area. Thermoshypon is a pipe consisting of 3 main parts: evaporator, adiabatik and condenser. The evaporator part is the part that receives heat and absorbs it to be brought to the condenser, which is the part that releases heat into the environment. The working process of closed thermosyphon is the fluid in the evaporator heated until it reaches the boiling point so it will evaporate to the condenser. In the condenser, heat is released with the help of a heat sink. From the fluid condenser back to the evaporator due to the force of gravity. This study aims to investigate the effect of rotational rotation speed on the performance of closed thermosyphon.           In this study, made of copper with a diameter of 9.52 mm and a total length of 400 mm. The evaporator region as the heat-affected side, the adiabatic portion is isolated so that there is no heat exchange with the environment and the condenser area is installed a heat sink which aims to remove heat from the closed thermosyphon into the environment. This research is done by varying the speed of rotation in thermosypon. The rotation variations used in this study are 100 rpm, 200 Rpm, 300 Rpm, 400 Rpm, 500 Rpm and 600 Rpm. The required data are temperature on evaporator (Te), condenser part temperature (Tk1, Tk2, Tk3) and air temperature (Tu).           The results showed that, Thermal resistance at the smallest Closed thermosyphon (0,50C / W) occurred at the speed of rotation 600 rpm with input power of 63 W. At the same rotation speed, the higher the input power, the greater the heat flux and power Output. The experimental process is the largest output power and the largest heat flux occurs at the highest input power, 63 W and the highest rotational speed, 600 rpm that produces 31 W output power and 26 W / Cm2 heat flux.
STUDI EKSPERIMENTAL PENGGUNAAN BOSS CAP FINS UNTUK MENINGKATKAN EFISIENSI PADA PROPELLER Budi Rolly Yuana; Siti Sadiah; Kristian Hadi Siswanto; Setyo Leksono
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.152

Abstract

The phenomena of cavitation which occurs when the propeller work can cause adverseeffects. One of them is the ship would miss the thrust so that the speed can not beachieved as expected. Various experiments and researches have been done in an effort toobtain maximum results by reducing or even eliminating cavitation occurring.One of these efforts is to reduce or eliminate cavitation occurring on the hub vortex. Thisis done by modifying the propeller without changing the original design self. Thepropeller boss cap is modified by adding fins / fin, and then examines the differencesbetween the cavitation that occur with a standard cap boss the modified. It is thencalculated how big the impact on the efficiency of the propeller. In this study, propellermodels of type B series 4:45 (model no. 3468) is used. The test conducted in thecavitation tunnel Laboratory for Hydrodynamics, BPP Technology in Surabaya.From the results of efficiency measurements and observations conducted cavitation it wasfound that modifications made to be able to eliminate the hub vortex cavitation therebyincreasing the efficiency up to 8.58%.
STUDI EVALUASI KEAKTIFAN DAN KEUNGGULAN KOMPETITIF DAN KOMPARATIF SDM KONSTRUKSI TEKNISI/TENAGA TERAMPIL DI PROVINSI KALIMANTAN SELATAN Zain Hernady Arifin; Reza Adhi Fajar
INFO-TEKNIK Vol 16, No 2 (2015): INFOTEKNIK VOL. 16 NO. 2 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i2.204

Abstract

Human Resources in construction are individuals who practice the profession in engineering and kearsitekturan and skilled workers (labor skills) in the construction sector. ASEAN Free Trade Area (AFTA) will be applied. There will only be a single market and production base with five main elements, yatu free flow of goods, free services, free investment, capital flows and free flow of skilled labor. In fact only partially SDM active construction (the true players) while the rest just borrowed its name (the shadow players). In addition, it should also be known a real picture of how big comparative advantage and competitive advantage SDM Indonesian construction or area in order to face competition in the single market of the ASEAN (AFTA, 2015). Skilled Manpower local contribution is relatively moderate to increased construction services sector in the province of South Kalimantan. In this case the maximum effort must be taken of local communities in order to improve the construction services in the context of quality and quantity.This has resulted in much chance (opportunity) Skilled from outside the province or from outside the island. Skilled portrait in the province of South Kalimantan consecutive gradually decreases linearly with the level of education at Skilled qualification Tk 1, Tk.2 to Tk.3. There are several things that can be recommended for stakeholders to improve the system, namely: 1. Acceleration up-grading Skilled Local, supported by the Party Regulator construction services (Government and LPJK) more strict in applying the rules relating to the certification of skilled workers in the area. 2. The database for Skilled Workers, particularly at Level 2 qualification. 3. Level 3, where a database of skilled labor is easily accessible online and update. Keywords: Skilled, Construction, South Kalimantan
Analisis Sungai Tiung Dalam Rangka Pengendalian Banjir Abdul Ghofur; Mahmud Mahmud
INFO-TEKNIK Vol 7, No 2 (2006): INFOTEKNIK VOL. 7 NO. 2 2006
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v7i2.1716

Abstract

Banjir di DAS Tiung terjadi akibat meluapnya Sungai Tiung karena penampang sungai mengalami pendangkalan dan penyempitan. Penyebabnya berkaitan erat dengan kegiatan pendulangan intan yang tidak terkendali, mengakibatkan tanah menjadi gersang dimana resisten terhadap erosi, sehingga mengalirkan endapan ke alur sungai. Oleh karena itu diperlukan studi untuk menentukan besar debit banjir rencana dalam periode 25 tahun, sekaligus meninjau profil muka air sungai terhadap kondisi eksisting, yang akhirnya dapat dijadikan acuan dalam usaha pengendalian banjir.Tujuan dari penelitian adalah untuk menganalisis sungai tiung dalam rangka pengendalian banjir, dalam menganalisis Sungai Tiung ini, diperlukan beberapa analisis seperti analisis hidrologi yang mencakup analisis curah hujan maksimum dengan metode Probabilitas Frekuensi (Log Normal,Gumbel dan Log Pearson Tipe III) dan analisis debit banjir rancangan dengan metode empiris seperti metode Rasional praktis,Hasper, Der Weduwen, dan Hidrograf Satuan Sintetis Nakayasu.Pada analisis hidrolika , dalam penentuan elevasi muka air dan dimensi saluran normalisasi untuk debit periode 25 tahun digunakan program bantu Hec-Ras 3.0. Sedangkan analisis stabilitas lereng didukung dengan program bantu Xstable yang mengacu pada Modified Bishop Method.Hasil analisis hidrologi memperlihatkan besar banjir periode 25 tahun menunjukkan harga debit sebesar 54,826 m3/d dan berdasarkan hasil analisis hidraulika, besarnya dimensi saluran normalisasi untuk periode tersebut adalah 9 m (lebar dasar) dan 3,6 m (tinggi saluran) dengan talud 1: 1,5. Jarak air yang melimpas di kiri dan kanan tepi alur sungai diprediksi sebesar 8,12 m  untuk periode ulang 50 tahun. Nilai keamanan terhadap keruntuhan lereng (SF) diperoleh 2,33 untuk bagian hulu dan 1,903 untuk bagian hilir dengan menggunakan program Xstable.
STUDI DRAINASE BERWAWASAN LINGKUNGAN UNTUK JALAN PANGERAN ANTASARI BANJARMASIN Holdani Kurdi; Akhmad Zairin
INFO-TEKNIK Vol 14, No 2 (2013): INFOTEKNIK VOL. 14 NO. 2 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i2.298

Abstract

Pangeran Antasari road which located in Eastern District of Banjarmasin frequent damage to roads due to drainage channels do not function properly , resulting in a puddle of water on the road . Therefore drainage planning is a good way on the road , in order to determine the design rainfall and discharge large plan dimensions of effective drainage on the road .This anaysis use rainfall data and calculate the maximum that would be obtained by Log Pearson III methods . It is examined in conformance testing , after that recalculated rainfall to rainfall intensity obtained by the method Mononobe . The area of the drainage channel is calculated per section and see the conditions in the field can then be used to calculate water discharge plan using rational methods that will be used to plan the dimensions of good drainage and economical as well as applying the concept ekodrainase.In the cross-sectional results of drainage planning on Prince Street Antasari water discharge plan obtained ranged from 0.7317 to 1.631 m2/sec for left and right channels on Pangeran Antasari road planned Square -shaped channel . with 3 ( three ) comparisons : ( 1 ) precast concrete channel with reference steel ( N = 0,011 ) with the cross-sectional area ranged from 0.5802 to 0.7296 m2 right channel and left channel 0.5033 to 0.7836 m2 . ( 2 ) soil Channel created by Excavator ( N = 0028 ) with cross-sectional area ranged from 0.8237 to 1.0803 m2 right channel and left channel 0.7145 to 1.1124 m2 . ( 3 ) Channel masonry ( N = 0.03 ) with the right- channel cross-sectional area ranged from 0.8453 to 1.1086 and from 0.7332 to 1.1416 m2 left channel .
PENAMBAHAN TULANGAN LONGITUDINAL DENGAN KOMPOSIT MORTAR SEBAGAI ALTERNATIF PERKUATAN LENTUR PADA BALOK BETON BERTULANG Nursiah Chairunnisa
INFO-TEKNIK Vol 10, No 1 (2009): INFOTEKNIK VOL. 10 NO. 1 2009
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v10i1.1759

Abstract

In order to maintain efficient serviceability structure cause change of function from structures likes overloading or lack of quality control at construction , structures must be strengthened so they can to fulfill the code of structures built to day and future. One of method to strengthenned of structures elements was beams elements. This research had to know about effectiveness strengthening methods of reinforced concrete beams using longitudinal compression and tension reinforcement with jacketing mortar as flexural strengthening  and had to know about implementation for mortar that had high flowability.In this research specimen models consist of  four specimens: one was control beam (BK), one was monolith beam (BM) and one was strengthened beam (BP) . All beams were tested under 2-point loading midspan as flexural load and also instrumented for the measurement of mid-span deflection and crack pattern.The result show that monolith and strengthened beams have performed better in the ultimate load for BM specimen were 124,79% , BP specimen were 75,49% compared BK specimen. Ductility of beam at experiment for BM specimen decrease were 55,78% compared BK , ductility of BP specimen increased  were 50,61% compared BK specimen because of debonding . Failure patterns of the control beam (BK) and monolithical beam (BM) were flexural while the strengthened beam (BP) had debonding. At this researched, methods of strengthened reinforced concrete beam with mortar jacketing had simply worked for implementation.

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